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No. 580,006. Patented Apr. 6, 1897.

5 Q I F FIG. 7.

v INyENTOR:

By his Afzomeys.

UNTTED STATES PATENT EETcE.

GEORGE II. F. SCIIRADER, OF NEIV YORK, N. Y.

TIRE-VALVE CAP.

SPECIFICATION forming part of Letters Patent No. 580,006, dated April 6,1897.

Application filed July 81, 1896- Serial Nol,l46. (N0 model.)

To all whom, it may concern.-

Be it known that I, GEORGE H.F.SCHRADER, a citizen of the United States,residing in the city, county, and State of New York, have inventedcertain new and useful Improvements in Tire-Valve Caps, of which thefollowing is a specification.

This invention relates to caps for tire-valves, and aims to providecertain improvements therein, which will be hereinafter fully set forthwith reference to the accompanying drawings, which show the invention inseveral adaptations as applied to a cap adapted to inclose the end of atire-valve and having for that purpose an internal threaded cavity forscrewing on the external threaded end of the valve.

In the drawings, Figure 1 is a perspective view of a tire-valve capconstructed according to the preferred form of my improvements. Fig. 2is an axial section thereof. Fig. 3 is a side elevation, partly insection, showing the cap-body before application of the covering. Fig. iis a plan, and Fig. 5 an axial section, of the top covering. Fig. 6 is aplan, and Fig. 7 is an axial section, of the side covering; and Fig. 8is a side elevation, partly in axial section, showing a modification inwhich the top covering only is used.

Referring to the drawings, let A indicate the body of a tire-valve cap;B, the deflatingpin thereof; 0, the top surface of the cap; D, theknurled or roughened grasping band or handle of the cap; E, the reducedcylindrical side thereof; F, the bottom thereof; G, theinternally-screw-threaded socket of the cap; II, a packing-washertherein, and I an antifriction metal disk between this washer and thetop wall of the socket G.

As thus far described, the cap may be of any usual or suitableconstruction, adapted either for engaging the male thread of anexternally-sorew-threaded valve-body or for engaging the female threadof an internal screwthreaded valve-body to serve as a closure or plugfor the open end of the latter.

According to one feature of my present invention I provide the body Awith a separate and auxiliary top covering or guard J, and according toanother feature I provide the body with a separate side covering orguard K. The guard J is preferably a thin concavoconvex disk having aninner wall of thin slightly-elastic sheet metal a and an outer wall ofsmooth relatively soft and colored enamel or other material Z), which isbaked or otherwise suitably formed on the wall a. The disk J has acentral aperture ,0, surrounded by the slightly outturned or distortededges d, the space through which is just sufficient to permit the diskto be forced over the cylindrical exterior e of the projection B of thecap. The top 0 of the cap is formed witha slightly tapering 0r convexface f, extending from the projection B to or nearly to the knurledportion D, and the projection at its junction with this wall is formedwith an annular groove 9 in its wall 6, the bottom of which groove maybe flush with and a continuation of the top wall f, while the top ofthegroove constitutes a projecting shoulder h. The disk J is forced overthe projection B until its concave bottom face lies close upon the convex top face of the body and its inner edge (I is opposite the groove g,into which groove this edge is forced or sprung until it is passedbeneath and firmly held by the shoulder h. To insure a tight fit, thedisk may be initially formed with a greater bulge than that of the wallf, as shown in Fig. 5, so that in pressing it home on such wall it willbe distorted elastically to the position shown in dotted lines in suchfigure, whereupon being held in this position by the shoulder it itselastic tendency to resume its normal position will cause its body andits outer edges 1' to tightly embrace the top wall of the cap, thuspreventing any looseness or rattling.

I prefer to terminate the disk J inwardly of the outer edge of the top 0and to form a shoulderj on this wall, against which shoulder the outeredge of the disk bears or is forced. This shoulder may, when used, beformed parallel with the axis of the cap, so that it is undercutrelative to the curvature of the disk, as shown in Figs. 2 and 3, inwhich figures the top wall f is shown as turned down from the normalsurface of the top 0, so that the disk J is partially countersunk in thelatter. If desired, the forcing of the disk within the flanges j may berelied on for fastening it in place.

The side guards or rings K consist of a separate endless ring composedof an inner thin sheet-metal wall 7t and an outer wall Z, of enamel,paint, or other suitable composition, preferably covered and baked orotherwise suitably formed on the wall 70. The combined material isformed'into a ring by stamping, spinning, or drawing it intosubstantially cylindrical shape and of a size snugly fitting thecylindrical external wall on of the cap. The ring K is of a width nearlyequaling the depth of the side E of the cap, and when forced thereoveris best held in place by slightly swaging or turning out a lip 47. onthe cap against the lower edge of the ring, this lip making then ashoulder holding the ring in place. At top the ring is forced into anundercut shoulder or is otherwise suitably held beneath the handle D ofthe cap.

The disk J and ring K are preferably both of the same material and maybe of the same or dilferent colors. Each may be rotative on the cap orrigid thereon. Their distinctive appearance gives an improved appearanceto the cap, while they serve to indicate clearly the proper portion tobe grasped by the hand for applying or removing the cap. hen either isrotative, it serves as a guard against unintentional turning of the cap,since then the covering grasped will turn on the cap and the latter canonly be turned by its handle D.

In the modification shown in Fig. 8 the disk J covers all the top of thecap and part of the sides of the projection B, the end of the latter andthe handle D being exposed and no side covering being employed. In thiscase the flange d continues outwardly in tubular form and enters anelongated groove 9' in the projection B. The outer edge t of the disk ishere exposed and terminates flush with the bottoms of the notchesconstituting the roughing of the handle D.

It will be seen that my invention provides improvements which can bereadily and advantageously availed of, and it will be understood thatthe invention is not limited to the particular details of constructionand arrangement of parts nor to the particular combination of featuresset forth as constituting the preferred form of the invention, since itcan be employed according to such modifications as circumstances or thejudgment of those skilled in the art may dictate without top, aprojection centrally thereof, and a grasping portion surrounding theedge of the top, in combination with a separate annular disk ofdifferent material from, rotatable on,

and covering, the top between said projection and portion, surroundingsaid projection and fitting against said top between said projection andsaid grasping portion and differentiating the latter, and meansfastening said disk and body movably together.

2. In tire-valves, a body having a handle portion and reducedcylindrical side walls below it, in combination with a separate sidecovering of a different material from, rotatable on, and covering, theside walls between said port-ion and the lower end of the'body,consisting of a ring surrounding and fitting said side walls below andof less diameter than and differentiating said handle portion, and meansfastening said ring movably on said body.

3. In tire-valve caps, a body having a handle D, a top, and a centralprojection thereon having an annular groove, in combination with aseparate annular disk'J having an aperture passing over said projection,fitting said top, and fitting at its inner edge within said groove, andthereby fastened on said body, said disk covering said top,differentiated from said handle, and indicating the latter.

4. In tire-valve caps, a body having a convex top having an annularshoulder j surrounding it, in combination with a separate convex disk Jof thin material fitting said top within said shoulder anddifferentiated from said top.

5. In tire-valve caps, a cap-body, having a concave top and a roughgrasping portion surrounding it, in combination with a separate convexcovering fastened rotatably to said top and covering it from saidportion inwardly, and consisting of a thin sheet-metal wall bearingagainst said body and an outer wall of colored composition adhering tosaid sheet-metal wall, said covering differentiated from said body andexposing and indicating a salient portion thereof.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

GEORGE II. F. SCIIRADER.

lVi tnesses:

GEORGE ll. Fnasnn, Tnonas F. WALLAcE.

ICO

